Acell was set up having the following reaction mg(s) + cd2+ (aq) → mg2+ (aq) + cd (s) e°cell = 1.97 v the magnesium electrode was dipped in a 1.00 m solution of mgso4 and the cadmium electrode was dipped in a solution of unknown cd2+ concentration. the cell potential was measured to be 1.80 v. what is the unknown cd2+ concentration?

Answer : The concentration of unknown will be,

Solution :

The balanced cell reaction will be,  

Here magnesium (Mg) undergoes oxidation by loss of electrons, thus act as anode. Cadmium (Cd) undergoes reduction by gain of electrons and thus act as cathode.

Now we have to calculate the concentration of unknown .

Using Nernest equation :

where,

n = number of electrons in oxidation-reduction reaction = 2

= emf of the cell = 1.80 V

= standard cell potential = 1.97 V

= concentration of magnesium ion = 1.00 M

= concentration of cadmium ion = ?

Now put all the given values in the above equation, we get

concentration of unknown .

Therefore, the concentration of unknown will be,

b) mutualism

hope this : )

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.